Wyoming’s Comprehensive Report on Traffic Crashes, 2005
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Summary
This document is a comprehensive statistical report published by the Wyoming Department of Transportation’s Highway Safety Program, detailing traffic crash data for the year 2005. The report serves as a factual record of roadway safety conditions, providing granular data to support highway safety planning and analysis. It aggregates crash statistics across multiple dimensions, including geographic location, crash severity, human factors, environmental conditions, and vehicle types. The methodology involves the compilation and categorization of police-reported crash data. The report presents data through tables and graphs, breaking down incidents by county, city, and rural/urban classifications. It analyzes specific variables such as driver age and sex, contributing human factors (including alcohol impairment), safety equipment usage, weather and road conditions, and vehicle mechanical defects. Specialized sections focus on high-risk demographics and vehicle classes, including drivers aged 14–20, trucks, school buses, and motorcycles. The data covers the full spectrum of crash outcomes: fatal, injury, and property-damage-only (PDO) incidents. In 2005, Wyoming recorded 15,882 total traffic crashes, resulting in 147 fatal crashes, 3,977 injury crashes, and 11,758 PDO crashes. These incidents involved 170 fatalities and 6,112 non-fatal injuries. Natrona County reported the highest volume of crashes (2,461), while Hot Springs and Niobrara Counties reported the fewest. Fremont and Laramie Counties had the highest number of fatal crashes (13 each). Motor vehicle-to-motor vehicle collisions were the most frequent crash type, while overturns were the most common type of fatal crash. December saw the highest number of total crashes, and Fridays had the highest crash frequency. Alcohol was involved in 51 fatal crashes, representing 34.7% of all fatalities. The report notes that 87% of occupants reported using safety equipment. Rural areas accounted for 6,588 crashes compared to 9,294 in urban areas, though rural crashes constituted a larger proportion of fatal incidents (123 rural vs. 24 urban fatal crashes). The significance of this report lies in its detailed breakdown of risk factors, which informs targeted safety interventions. For instance, the data highlights the disproportionate impact of alcohol on fatal crashes and the specific risks associated with young drivers (4,205 crashes involved drivers aged 14–20). The inclusion of economic loss estimates, totaling $416,728,600 for the state, underscores the financial burden of traffic crashes. By providing longitudinal data (1990–2005) and specific holiday crash statistics, the report allows for trend analysis and the evaluation of safety programs over time. The granular data on vehicle types and environmental conditions supports infrastructure improvements and enforcement strategies aimed at reducing crash severity and frequency.
Key finding
Wyoming recorded 15,882 traffic crashes in 2005, resulting in 170 fatalities and 6,112 non-fatal injuries, with 34.7% of fatal crashes involving alcohol.
Methodology
dataset
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
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| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 3 | 2026-06-10 |
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| verify | success | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Empirical Findings: crash risk outcomes